int STRING_copy()

in src/strings.c [489:526]

• 34 lines of code
• 5 McCabe index (conditional complexity)

int STRING_copy(STRING_HANDLE handle, const char* s2)
{
    int result;
    if ((handle == NULL) || (s2 == NULL))
    {
        /* Codes_SRS_STRING_07_017: [STRING_copy shall return a nonzero value if any of the supplied parameters are NULL.] */
        result = MU_FAILURE;
    }
    else
    {
        STRING* s1 = handle;
        /* Codes_SRS_STRING_07_026: [If the underlying char* refered to by s1 handle is equal to char* s2 than STRING_copy shall be a noop and return 0.] */
        if (s1->s != s2)
        {
            size_t s2Length = strlen(s2);
            char* temp = realloc_flex(s1->s, 1, s2Length, 1);
            if (temp == NULL)
            {
                LogError("Failure in realloc_flex(s1->s=%s, 1, s2Length=%zu, 1);",
                    s1->s, s2Length);
                /* Codes_SRS_STRING_07_027: [STRING_copy shall return a nonzero value if any error is encountered.] */
                result = MU_FAILURE;
            }
            else
            {
                s1->s = temp;
                memmove(s1->s, s2, s2Length + 1);
                result = 0;
            }
        }
        else
        {
            /* Codes_SRS_STRING_07_033: [If overlapping pointer address is given to STRING_copy the behavior is undefined.] */
            result = 0;
        }
    }
    return result;
}